<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .loading {
            font-size: 20px;
            text-align: center;
        }
    </style>
    <link rel="stylesheet" href="css/index.css">
</head>

<body>
    <div class="loading">loading</div>
</body>

</html>
<script src="js/main.js"></script>
